Boulder, CO: Sunrise, Sunset, Moonrise, Moonset, Twilight

Tabular summary: Time of Sunrise, sunset, moonrise, moonset, daylight hours, twilight for Boulder, CO - all times are local times no DST is calculated

Sun

Moon

Twilight

Day

Rise

Set

Transit

Daylight

Rise

Set

Morning

Evening

Mon Oct 1

05:57

17:43

11:51

11:46 hrs.

22:28

12:37

04:59

18:41

Tue Oct 2

05:58

17:41

11:50

11:43 hrs.

23:28

13:37

05:00

18:40

Wed Oct 3

05:59

17:40

11:50

11:40 hrs.

00:34

14:31

05:01

18:38

Thu Oct 4

06:00

17:38

11:50

11:38 hrs.

00:37

15:19

05:02

18:37

Fri Oct 5

06:01

17:37

11:49

11:35 hrs.

01:46

16:01

05:03

18:35

Sat Oct 6

06:02

17:35

11:49

11:33 hrs.

02:58

16:39

05:04

18:33

Sun Oct 7

06:03

17:33

11:49

11:30 hrs.

04:09

17:13

05:05

18:32

Mon Oct 8

06:04

17:32

11:48

11:27 hrs.

05:20

17:46

05:06

18:30

Tue Oct 9

06:05

17:30

11:48

11:25 hrs.

06:29

18:18

05:07

18:29

Wed Oct 10

06:06

17:29

11:48

11:22 hrs.

07:37

18:51

05:08

18:27

Thu Oct 11

06:08

17:27

11:48

11:20 hrs.

08:43

19:26

05:09

18:26

Fri Oct 12

06:09

17:26

11:47

11:17 hrs.

09:46

20:03

05:10

18:24

Sat Oct 13

06:10

17:24

11:47

11:15 hrs.

10:46

20:44

05:11

18:23

Sun Oct 14

06:11

17:23

11:47

11:12 hrs.

11:42

21:29

05:12

18:21

Mon Oct 15

06:12

17:21

11:47

11:09 hrs.

12:34

22:18

05:13

18:20

Tue Oct 16

06:13

17:20

11:47

11:07 hrs.

13:20

23:10

05:14

18:18

Wed Oct 17

06:14

17:18

11:46

11:04 hrs.

14:01

00:05

05:15

18:17

Thu Oct 18

06:15

17:17

11:46

11:02 hrs.

14:38

01:02

05:16

18:16

Fri Oct 19

06:16

17:15

11:46

10:59 hrs.

15:11

01:03

05:17

18:14

Sat Oct 20

06:17

17:14

11:46

10:57 hrs.

15:41

02:01

05:18

18:13

Sun Oct 21

06:18

17:12

11:46

10:54 hrs.

16:10

03:00

05:19

18:12

Mon Oct 22

06:19

17:11

11:45

10:52 hrs.

16:39

04:00

05:20

18:10

Tue Oct 23

06:20

17:10

11:45

10:49 hrs.

17:08

05:02

05:21

18:09

Wed Oct 24

06:21

17:08

11:45

10:47 hrs.

17:38

06:06

05:22

18:08

Thu Oct 25

06:23

17:07

11:45

10:44 hrs.

18:12

07:11

05:23

18:07

Fri Oct 26

06:24

17:06

11:45

10:42 hrs.

18:50

08:18

05:24

18:05

Sat Oct 27

06:25

17:04

11:45

10:40 hrs.

19:34

09:25

05:25

18:04

Sun Oct 28

06:26

17:03

11:45

10:37 hrs.

20:24

10:31

05:26

18:03

Mon Oct 29

06:27

17:02

11:45

10:35 hrs.

21:22

11:33

05:27

18:02

Tue Oct 30

06:28

17:01

11:45

10:32 hrs.

22:26

12:29

05:28

18:01

Thu Nov 1

06:31

16:58

11:45

10:28 hrs.

00:44

14:01

05:30

17:58

Annotation:

The calculated time for sunrise, sunset, moonrise, is accurate to + - 1 minute.
The actual times depend on unpredictable atmospheric conditions that affect
the amount of refraction at the horizon. Local topography (e.g., mountains
on the horizon) and the height of the observer can affect the times of rise
or set even more.

The times of dawn and dusk relate to the beginning of the so-called
"nautical twilight" (ie when the sun is 12 degrees below the
horizon). All calculations are for sea level.

Calculation of sunset and sunrise times for cities apart of the list of predefined cities are
dependent on the exact latitude and longitude coordinates and the time zone you entered.